'Don't even think about it,' he said. 'The muzzle flash on that thing? With these fumes in the air? You want to do their work for them?'

Plato said, 'How are they going to do it?'

Reacher said nothing. He was thinking. Picturing the scene on the surface, running options through his head.

See what they see.

Be them.

Not a match.

Plato was right.

A match would go out.

The guy from 4B gunned the de-icer truck and spun the wheel and took off east towards the top right corner of the runway. Fifty yards. Forty. Thirty. Twenty. He spun the wheel again and slewed through a tight circle and the guy from 4A jumped out of the pa.s.senger seat and ducked down and grabbed the burning flare at its base and pulled its spike out of the concrete. He held it away from his body and climbed back in the truck and kept the door open and held the flare at arm's length in the slipstream. It burned brighter and it smoked and flickered. But it didn't go out. The truck raced back. Fifty yards. Forty. Thirty.

The deluge kept on coming. It was never-ending. It poured and sheeted and hammered. The ventilation shaft was like a bathtub faucet increased in size by a factor of a hundred. Reacher was on his knees. His pants were soaked. The fuel was already a good half-inch deep. The fumes were thick. Breathing was hard.

Plato said, 'So what do we do?'

Reacher said, 'How fast can you run up a flight of stairs?'

Plato got to his feet.

'Faster than you,' he said.

They were face to face, nose to nose, Reacher on his knees, Plato on his feet.

'I don't think so,' Reacher said.

I'll have plenty of time to read after all this fuss is over.

Reacher unleashed the uppercut from his knees. A colossal, primitive, primeval blow, driven all the way from the centre of the earth, pulsing through the wet concrete, through his knee, his thigh, his waist, his upper body, his shoulder, his arm, his wrist, his fist, every muscle and every fibre twitching just once, rippling fast in perfect propulsive sequence and harmony.

Plato's jaw shattered and his head snapped back like a rag doll. He hung motionless for a split second and then he splashed down, hard and vertical.

Reacher was pretty sure he was dead when he hit the floor.

Then he made absolutely certain of it.

He clamped his hands on Plato's ears and jerked his head one way and then the other until he felt the vertebrae pull apart and then he kept on doing it until he was sure the spinal cord was torn all the way to mush.

The deluge kept on coming, rushing, sheeting, torrential. The round chamber, once still and dry and ancient, was soaked with chemical stink and boiling with fumes, the fuel suddenly close to an inch deep, with small urgent waves racing outward from a frothing maelstrom directly under the roaring pipe.

Surely everyone's afraid of death, Janet Salter had said.

Depends what form it takes, he had answered.

He ran.

He splashed across the floor on his knees and ducked his shoulders down and got his head up inside the stair shaft and crawled and clawed and scrabbled to his feet. He leaned in towards the centre pole and took the stairs three at a time, galloping madly, his left hand sliding up over the steel, his right hand pawing crazily at the wall, batting and clutching and grasping at every extra second. The sound of his feet on the metal was drowned out by the waterfall roar of the fuel from below. He charged on, three at a time, four at a time, not breathing, anaerobic, up and up and up, round and round and round, not counting, just running, running, running, climbing, churning, hammering, straining, hurling himself towards the surface.

The de-icer truck jammed to a stop and K-turned and backed up and straightened. Directly behind it, the stone building. Directly ahead of it, the runway. The guy from 4A got out and ran crouched with his arm straight and the flare in his hand. He stopped in the doorway and turned and held the flare behind him and paused for a second and then swung his arm and lobbed it in. The flare tumbled end over end, a bright pink firework hissing through the air. It hit the unfinished lip of the ventilation shaft and kicked up and turned over once more and then dropped straight down and out of sight.

Five minutes to four in the morning.

Sixty-one hours gone.

CHAPTER FORTY-SIX

IT WAS FOUR DAYS BEFORE THE SITE WAS COOL ENOUGH TO INSPECT. By that point there was a long line of agencies waiting to join the hunt. First on the scene were Homeland Security, the air force, the FBI, the Highway Patrol, and a group of specialist arson investigators drafted in by the government. The incident had attracted intense interest. The North American Air Defense Command had been the first to spot it. Their satellites had seen a bloom of amazing heat and their computers had interpreted it as either a missile launch or a missile strike. Their Russian equivalents had seen the same thing. Within seconds the White House had been on the phone, rea.s.suring, and receiving matching rea.s.surances. There were launch silos in South Dakota, yes, but not at that location. And in turn, no Russian missile had been fired at America.

The National Guard was sent in to secure a wide perimeter. Through it crept the waiting agencies, one by one. They set up forward operating bases five miles out. They sent patrols forward, as close as they dared. Then came news from the nearby town of Bolton of a strange toxic cloud borne on the westerly wind. The patrols were pulled back. Hazmat gear was issued. Doctors were dispatched to Bolton. Reported symptoms were confusing. It was as if a light dose of a psychostimulant drug had been administered to the entire population. Temporary euphoria and excitement were reported, as was difficulty in sleeping and enhanced s.e.xual appet.i.te. The air was tested. No conclusion was reached. The wind had been blowing strongly for days, all the way from Wyoming. No symptoms were reported further east in the state.

The patrols crept inward again.

Their first discovery was a crashed vehicle four miles south of the epicentre. It was an airport de-icing truck reported as stolen from a commercial airfield east of Rapid City. It seemed to have been driving south on the old county two-lane leading away from the site. The road was s...o...b..und and the surface was bad. It seemed that the truck had skidded off the road and turned over at least twice. It was an ungainly vehicle.

Two bodies were found close by. Two unidentified men of Hispanic origin, wearing dark suits apparently purchased in Mexico, under brand new winter parkas. The men had severe perimortem injuries, presumably caused by the crash, but they had died of exposure, presumably after crawling away from the wreckage. They were both carrying illegal fully automatic weapons. One gun seemed to have fired three rounds, and the other, nine. With that news, the Bureau of Alcohol, Tobacco and Firearms joined the roster of waiting agencies.

The patrols crept closer. By the middle of the second day the forward operating bases had been moved up to the southern edge of an old air force runway. At that new location they discovered a damaged and undriveable unmarked police car. It was positively identified by locals as the Bolton PD's property. It had been issued to the department's chief, Tom Holland. Holland had disappeared on the night of the fire. The Bolton PD was in disarray. It was dealing with three recent homicides, one of the victims being its own deputy chief, Andrew Peterson.

An observant fire officer taking a walk found the burned-out husks of two road flares, one in each corner of the old runway, apparently carefully placed. Which suggested the possibility of an unauthorized night landing. No flight plan had been recorded with the FAA. But through binoculars some agents claimed to see twisted wreckage just south of the epicentre that might or might not have been the remains of a large airliner. With that news, the National Transportation Safety Board joined the queue.

By the middle of the third day the Air Defense satellites showed the outer perimeter to have cooled to seventy degrees. The patrols moved up. The outer perimeter seemed to be about a hundred yards in diameter. Clearly some kind of fireball had bloomed, burned, and died back, but it had been brief compared to the main fire. The arson theorists began to run simulations on their laptops. Close inspection of the area inside the perimeter showed grievous damage. There was a dusting of ash a hundred feet out that might have been the remains of a human being. There was scorched and twisted aluminum that the NTSB claimed was the remains of an airliner, possibly a Boeing, possibly a 737.

The patrols moved up, into a dead world of twisted smoking fragments, some made of iron, some made of steel, some possibly from a vehicle, some smaller pieces possibly from weapons. Piled everywhere was debris from the plane. No attempt was made to quantify human remains. It would have been a hopeless task. Dust to dust, ashes to ashes, literally.

The only remotely intact structure was a small concrete stair head bunker disguised to look like a stone house. The air force claimed ownership. The original plans were lost, but anecdotally it was known to have been built fifty years previously, to contemporary blast-proof construction standards. It had stood up well. The roof was damaged. The interior concrete was blistered and spalled and calcified, but still reasonably solid. There were three circular shafts dropping down through the floor. It was surmised that once there had been steel casings for two ventilation ducts, and a spiral staircase probably also made of steel, but they had first melted and then vaporized.

Which proved, the arson people said, that the fire had started underground.

They donned protective gear and were lowered what turned out to be a total of two hundred and ten feet into the earth. They found a sequence of small tunnels and chambers, more blistered and spalled and calcified concrete, some ash that might once have been organic, and, amazingly, more than one thousand intact diamonds.

The arson specialists set up shop in the Bolton police station and connected their laptops wirelessly to their mainframes back home. They started work. They drew three-dimensional models of the underground facility. They made some guesses and a.s.sumptions. They knew from police records that a pump truck had been stolen along with the de-icer. So, if the aluminum had been an aeroplane, and if there had been an underground storage tank, then the accelerant might have been jet fuel. Which was consistent with their estimates of the fire's temperature, the upper limit of which they felt was defined by the survival of the diamonds, and the lower limit by the fact that the snow on the ground had been melted for two miles in every direction.

Major Susan Turner saw the news every evening on the television, and read it every morning in the papers, and followed it all day on line. She stayed in her office in Rock Creek, waiting by the phone. She slept in her visitor chairs, leaning back in one, her feet up on the other. The phone never rang.

After a week the arson theorists presented their best guesses. The fire had been a refuelling accident. Possibly due to undischarged static electricity arcing between the plane and the hose, more likely due to vapour build-up underground and a spark from a boot heel on concrete. The fire had burned mostly two hundred and ten feet below the surface, with enhanced thermodynamic characteristics due to a strange aerodynamic stasis in which a gale of air had howled down the stair shaft and the products of combustion had blasted up the twin ventilation shafts, in exactly opposite directions but with perfectly equal ma.s.ses and velocities, in what amounted to a controlled and everlasting explosion in a narrow vertical cylinder made of fireproof material. Like a rocket blasting off, but upside down, heading for the centre of the earth, not the sky. The roof damage was felt to prove it. Two temporary caps placed in the fake chimneys fifty years earlier had blown out and were found six hundred yards away. It was estimated that the narrow cone of flame might have reached a thousand feet above ground level, thereby mimicking the heat signature of a launching missile.

It was felt the initial phase of the fire might have lasted four hours. Then when the fuel load had depleted below a certain critical point the stasis had collapsed and a fireball had bloomed upward and outward, at a lower but still tremendous temperature, and had burned for an hour or so before collapsing again and finally burning out.

The toxic cloud in Bolton could not be explained. The air force admitted to storing surplus aircrew requirements from World War Two in the facility, all of it tanned leather in the form of helmets and boots and flying jackets, and it was felt that chemical residue from the tanning process might have been responsible for temporary adverse medical effects.

The presence of the diamonds was not explained, either. A theory was advanced that they had been stolen in Europe in the last days of the war, and entrusted to a quartermaster to be smuggled home, but had been mislaid and routed to the wrong destination.

After a series of discreet phone calls from the Pentagon, both the FBI and the local agencies in South Dakota concluded that in the absence of remains positively identifiable as human, no homicide investigation could be opened.

Two weeks later Kim Peterson moved with her children to a small rented house in Sioux Falls, to be nearer her father and their grandfather. Not exactly a teeming metropolis, but at least there were things to be seen from her kitchen window.

Four weeks later Susan Turner was deployed to Afghanistan. Elements of the 110th were operating there, and her presence was required. On her last day in Virginia she put Jack Reacher's old service file in a khaki envelope and marked it Return to Human Resources Command Return to Human Resources Command. She left it front and centre on the damaged desk. Then she walked out of the old Rock Creek office, and closed the door with the fluted gla.s.s window, and walked along the narrow linoleum corridor, and down the stone stairs, and out to her waiting car.

Also by Lee Child

KILLING FLOOR

DIE TRYING

TRIPWIRE

THE VISITOR

ECHO BURNING

WITHOUT FAIL

PERSUADER

THE ENEMY

ONE SHOT

THE HARD WAY

BAD LUCK AND TROUBLE

NOTHING TO LOSE

GONE TOMORROW